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Einstein Probe trigger EP250321a
Source 12 (SWIFT J115702.0+173322)

Image of the XRT detection

This source is detected in 1 block. Show all images.

Image of the LC

Spectrum

Image of the spectrum
Source details
Rank/Classification: 3: Uncatalogued X-ray source
RA (J2000):11h 57m 02.09s (= 179.25872°)
Dec (J2000):+17° 33′ 22.7″ (= +17.5563°)
Error (radius, 90%):7.8″
Detection flag:Good
XRT exposure:10.3 ks (vignetting corrected)
Peak rate:2.87 (+1.08, -0.88) ×10-3 ct s-1
Peak flux:1.2 (+0.5, -0.4) ×10-13 erg cm-2 s-1
Mean rate:2.3 (+0.8, -0.6) ×10-3 ct s-1
Mean flux:10.0 (+3.3, -2.6) ×10-14 erg cm-2 s-1
Has spectral fit?Yes
NH 2.04 × 1021 cm-2
Γ 2.40
Database ID:346
Things to check:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?No. Get XMM upper limit
LSXPS upper limit7.4×10-3 ct s-1
Obs rate/LSXPS UL≤0 σ
Rass upper limit20.031 ct s-1
Obs rate/Rass UL≤0 σ
Fading? ≤3-σ signifance.
Near 2MASS source? No
Near SIMBAD source?No.
High proper motion star?No.
Catalogue SearchCone search radius 23″ Vizier | Simbad | NED | X-ray master | LSXPS | 3XMM-DR5

Notes
All XRT count rates and fluxes are 0.3—10 keV
1Catalogued count-rates have been converted to XRT equivalents.
2Catalogued upper limits and fluxes have been converted to the XRT equivalent using the automatic power-law spectral fit described above.